An excellent review!
Unfortunately we've now sold all the stock HIS produced which was very limited quantity, though in May we shall have a very similar card, same cooler, with not so extreme OC for less money.
I find it bizarre that the 7950 version of this has beefier VRM cooling.
I have the HIS 7950 Boost clock and it's massive! The cooler looks fugly but it's very effective and my GPU temps never go above 61C. I've always preferred using blower type coolers too as they intake cool air and exhaust hot air out the back of the case (which is good as i have a micro-ATX build).
I use IPA. I might be tempted to get some akasa tim cleaner now...